Collapsible tube and the like



c. B. HASKELL COLLAPSIBLE TUBE AND THE LIKE Filed Jan. 4, 1923 PatentedJan. 27, 1925.

UNITED STATES CHARLES B. HASKELL, OF SOUTH PORTLAND, MAINE.

COLLAI'SIBLE TUBE AN D THE LIKE.

Application filed January 4, 1923.- Serial No. 610,688.

To all whom it may concern:

Be it known that I, CHARLES B. HASKELL, a citizen of the United States,residing at South Portland, in the county of Cumberland and State ofMaine, have invented certain new and useful Improvements in C01-lapsible Tubes and the like, of which the following is a specification.

My invention relates particularly to the H so-called collapsible tubesdesigned to hold toothpaste, shaving cream, paint, and other substancesof a like creamy consistency. These collapsible tubes are provided withscrew-threaded nozzles and the nozzle is closed by a screw cap. Toextract any of the contents of the tube the cap must be entirely removedfrom the nozzle and the contents of the tube squeezed out. The cap isthus liable to be lost and this fact often becomes annoying to the user.

In order to avoid removing the cap it has been proposed to so constructit that it cannot be entirely unscrewed from the nozzle and variousopenings have been formed in the cap and the nozzle throu h which thecontents of the tube may e forced when occasion requires that it shallbe used but these openin s are usually of small diameter and are liableto get stopped up when the creamy material dries and hardens.

The object of my invention is to form an opening through the screw capwhich will permit the escape of the material of the tube and permit anyexcess to be removed from the vlcinity of the opening by wiping,scraping or otherwise clearing the vicinity of the opening so as toprevent any excess material drying and clogging it up.

My invention in its referable form consists in chamferin 0 one corner oredge of the screw cap t ereby forming an opening which will connect withthe inside of the nozzle when the cap is partially unscrewed while atthe same time making a tight joint when the cap is screwed to its closedposition.

With an opening thus formed, the entire chamfered surface may be wipedor scraped ofi" of any excess material or the threadof the nozzle willact to secure this result as the cap is turned.

Vhile I have referred to my invention as applicable to collapsibletubes, it may also 55 be applied to any form of container such as abottle, using a screw-threaded nozzle and a screw cap and designed forcontaining freely flowing liquids.

In the accompanying drawing, I have illustrated a variety of forms inwhich my invention can be constructed.

Referring to the drawing,-

Fig. 1 is a plan of the top of a collapsible tube with the screw cap inplace and in open position,

Fig. 2 is the same with the cap removed,

Fig. 3 is a section on the line 3-3 of Fig. 1,

Fig. 4 is a front elevation of the same,

Fig. 5 is a side elevation taken at right angles to the position shownin Fig. 4.

Fig. 6 is a section on the line 3-3 showing the cap closed, and 4 Fig. 7is a vertical lon itudinal section through a modified form 0% the devicehaving the cap set at an angle with the body of the tube,

Referring to the form shown in Figs. 1 to 6, 1 indicates the collapsibletube; 2 is the screw-threaded nozzle and 3 is the cap.

The opening is formed by chamfering the corner of the cap by a cutextending in a plane surface from the upper surface diagonally throughthe cap and removing a generally triangularsection from the upper cornerof the cap as shown at 4.

This chamfering cut may be removed from the cap alone or it may includea portion of the nozzle. In Figs. 3 and 6, a portion of the nozzle isremoved, shown at 4, so that the plane or cut surface when the cap isscrewed down to its closed position will include a ortionof the cap, aportion 4 of the nozz e and a portion of the disk or gasket 5.

For the purpose of holding the cap in position, the diameter of thenozzle below the screw-threaded portion is slightly smaller than thescrew-threaded portion as shown at 6 and the lower end of the cap isturned slightly inward as shown at 7.

There is thus formed at the lower end of' the screw-threaded portion ofthe nozzle a shoulder 8 against which the inturned portion 7 of the capwill strike as the cap moves upward.

The cap is thus prevented from being entirely removed from the nozzle.

As will be seen in Fi 3, when the cap is unscrewed either who y orpartially, an

unscrewed, the screw thread opening 10 is formed through the chamferedportion between the upper end of the nozzle and the lower surface of thecap.

There is thus formed an elongated opening of greater or less thicknessor wldth through which a-ribbon-shaped ortion of the material will beforced as t e tube" is squeezed.

Any surplus material which may adhere around the opening may be wipedoff from the chamfered surface or when the cap is of the cap willopening and rewhich may adhave a tendency to clear the move any driedmaterial here around it.

When the cap is screwed tightly in place a tight joint 11 is formedwhich effectually prevents the admission of air and the drying up of thecontents of the tube.

In Fig. 7, I show modification in which the nozzle and cap are set at anangle with the body of the tube so that the chamfercd surface 4 comes inline substantially with the center of the tube and when the tube is heldupright the dischar e opening for its contents will be directly ieneathand in line with the center.

I claim In a collapsible tube for toothpaste and the like embodying ascrew-threaded nozzle, an opening in the top of the nozzle, a screw captherefor, at the juncture of the end and side wall to form an opening inthe cap, said openingbeing normally out of alignment with the opening inthe nozzle whereby the partial unscrewing of the cap will form a directopening into the interior.

CHARLES B. HASKELL.

said cap being chamfered off

